Back in May, Facebook held its F8 developers conference where it announced new features for its Facebook family of apps. More specifically, it was at this event that WhatsApp was officially going to get group calling sometime in the future. Today, WhatsApp has officially announced that group calling for both voice and video is finally here. The messaging app also shares that WhatsApp users spend more than 2 billion minutes on WhatsApp calls per day. To start a group call, start a one-on-one video or voice call with a single person. Then, you'll see a button at the top-right...
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